The change to the friends list filter system. It effectively limits you to a single filter. I *like* having the option of multiple filters. There are plenty of people that I want to read my day-to-day posts but not my deepest-secret-thoughts post. The description of your friend list system in the faq indicates that I will just have one choice: they read me or they don't.

Unless you are supporting the filter system, which strikes me as disingenuous since the same description decries it as confusing.